<template>
  <div class="sidebar">
    <el-menu
      class="sidebar-el-menu"
      :default-active="onRoutes"
      :collapse="collapse"
      unique-opened
      background-color="#324157"
      text-color="#bfcbd9"
      active-text-color="#20a0ff"
      router
    >
      <template v-for="item in items">
        <template v-if="item.subs">
          <el-submenu :index="item.index" :key="item.index">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.title }}</span>
            </template>
            <template v-for="subItem in item.subs">
              <el-submenu v-if="subItem.subs" :index="subItem.index" :key="subItem.index">
                <template slot="title">{{ subItem.title }}</template>
                <el-menu-item
                  v-for="(threeItem,i) in subItem.subs"
                  :key="i"
                  :index="threeItem.index"
                >{{ threeItem.title }}</el-menu-item>
              </el-submenu>
              <el-menu-item v-else :index="subItem.index" :key="subItem.index">{{ subItem.title }}</el-menu-item>
            </template>
          </el-submenu>
        </template>
        <template v-else>
          <el-menu-item :index="item.index" :key="item.index">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.title }}</span>
          </el-menu-item>
        </template>
      </template>
    </el-menu>
  </div>
</template>

<script>
import bus from "../plugins/bus";

export default {
  data() {
    return {
      collapse: false,

      UserType: JSON.parse(sessionStorage.getItem("userInfo")).usertype,

      items: [],
    };
  },
  computed: {
    onRoutes() {
      console.log(this.$route.path);
      return this.$route.path.replace("/", "");
    },
  },
  created() {
    // 通过 Event Bus 进行组件间通信，来折叠侧边栏
    bus.$on("collapse", (msg) => {
      this.collapse = msg;
      bus.$emit("collapse-content", msg);
    });

    if (this.UserType == 0) {
      // 管理菜单
      this.items = [
        {
          icon: "el-icon-s-home",
          index: "manageabout",
          title: "管理教室信息",
        },
        {
          icon: "el-icon-user-solid",
          index: "managemessage",
          title: "工作台",
        },
        {
          icon: "el-icon-info",
          index: "manageinfo",
          title: "用户管理",
          // subs: [
          //   {
          //     index: "403",
          //     title: "无权限页面",
          //   },
          //   {
          //     index: "404",
          //     title: "页面走丢了",
          //   },
          // ],
        },
      ];
    } else {
      this.items = [
        {
          icon: "el-icon-s-home",
          index: "about",
          title: "教室申请",
        },
        {
          icon: "el-icon-info",
          index: "info",
          title: "工作台",
          // subs: [
          //   {
          //     index: "403",
          //     title: "无权限页面",
          //   },
          //   {
          //     index: "404",
          //     title: "页面走丢了",
          //   },
          // ],
        },

        {
          icon: "el-icon-user-solid",
          index: "message",
          title: "用户信息",
        },
      ];
    }
  },
};
</script>

<style scoped >
.sidebar {
  display: block;
  position: absolute;
  left: 0;
  top: 70px;
  bottom: 0;
  overflow-y: scroll;
}
.sidebar::-webkit-scrollbar {
  width: 0;
}
.sidebar-el-menu:not(.el-menu--collapse) {
  width: 250px;
}
.sidebar > ul {
  height: 100%;
}
</style>
